Do you have any advices to make winform ui look as good as wpf?

You cant do a lot, i dont think winforms even has anti-alliasing which makes uis look a lot better, it just doesnt render as well as wpf

why are people just waking up and deciding 'im a ui dev'. i'll be honest if you're looking to improve yourself you wouldn't hesitate to invest a few hours to get familiar with .xaml.

also youre entire premise is malinformaed, you can create very good niterfaces in winforms, the only thing stopping you is yourself and your familiarity with UI design in general, conventions etc. The onyl limitaion of winforms would be in lack of flexibility in creating styles and animations, yet there are still workarounds for this, so if you are serious you will find no issue, and if you want to learn with a better framework/technology that is not deprecated, then you would gladly go with wpf / xaml since it has more capabilities and is more widely used. Even then WPF is not that popular. Winforms is severly outdated.

Use those like premade UI components for Winforms like Bunifu UI or whatever it's called. Also switch from .NET framework to .NET 6 or 7 because it has antialiasing

you could make ur own buttons and add therm to ur project do a bit of backend and u should be good to go 

i only make winforms uis since like u said i get confused in wpf and i dont like it 

here is an ui that i made in winforms : https://media.discordapp.net/attachments/1138439620305113118/1138453970638090240/image.png?width=589&height=438

i use html colors for the border  :   private readonly Pen borderPen = new Pen(ColorTranslator.FromHtml("#6A66E3"), borderWidth);

id suggest u learn backend and u should be good to go!

backend and frontend.